The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.

The fabrication is described and data are presented on a laser diode that incorporates a buried photonic etched void pattern within its cavity. Side by side comparison with laser diodes fabricated without the pattern are used to demonstrate its influence on the laser characteristics

Summary form only given. Self-organized quantum dots (QDs) offer unique opportunities to realize new types of semiconductor lasers and spontaneous light sources. One of the more interesting and potentially important is their use in microcavities. In this paper the authors describe experimental data based on incorporating self-organized QDs in a new type of all-epitaxial microcavity that can form a...

We have demonstrated high spontaneous emission coupling factor ~ 0.1 from photonic crystal nanolasers with quantum dots. This high coupling resulted from narrow homogenous broadening of the quantum dots and the small number of resonances

Summary form only given. Recent progress in microfabrication involving, etching processes makes it possible to engineer three-dimensional (3D) nanostructures from MBE-grown planar Fabry-Perot micro-cavities. The optical mode is confined laterally by implementing a thin dielectric (native oxide) aperture layer on top of the cavity spacer. The sample under investigation consists of a 16 period GaAs/AlAs...

Summary form only given. We present a process that seals an exposed AlAs layer against further oxidative decomposition. The sealant is formed by a rapid thermal anneal (RTA) to a temperature of /spl sim/500 to 600/spl deg/C in forming gas after brief exposure of the AlAs surface to the typical room environment. The surface barrier layer thus formed is thin and impermeable to diffusing oxygen species,...

The cascadability of an optically latching vertical-cavity surface-emitting laser is investigated through the use of a wavelength-tunable optical probe. The bistable vertical cavity laser emits at a wavelength of 0.98 mu m, and shows a sensitivity peak to probe light generated from a grating-tunable edge-emitting laser in the 0.98 mu m wavelength range. The sensitivity peak occurs in a window of approximately...

Data are presented showing that it is possible to optically couple a semiconductor quantum well to a mirror, and thus influence its spontaneous emission lifetime, for mirror to quantum well spacings of less than an optical wavelength. Light emitting diodes with various mirror to quantum well spacings corresponding to quantum well placement at either interference nodes or antinodes are characterised...

Accessibility options

You can change the active elements on the page (buttons and links) by pressing a combination of keys:

TAB go to the next element

SHIFT + TAB go to the previous element

Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.